Feeding mechanism for sewing-machin es



no Model.)

Patented May 31, 1887.

INVENTEIFL U ITED STAT S PATENT" OFFICE.

JOHN WV. DEYVEES, OF PHILADELPHIA, PENNSYLVANIA.

SPECIFICATION forming part of Letters Patent No. 363,811, dated May 31, 1887.

' Application filed March 27, 1856. Serial No. 196,8fl9. (No model.)

panying drawings, which form part of this specification.

My invention has for its object to provide an adjustable feed of improved for a sewing-machine.

My improvements consist in the peculiar construction and combination of parts,hereinafter fully described and claimed.

In the accompanying drawings, Figure l is construction aperspective ofa portion of a sewing-machine,

illustrating my improvements. Fig. 2 is a perspective of a lever forming part of my im: proved feed mechanism, and Fig. 3 is a plan view of said feed mechanism and a part of the bed of the machine. Fig. 4. is a front or end elevation of bed-piece, feed-bar, and dog.

In said drawings, A. is the bed-piece, and B the main shaft of the machine, said shaft having its bearings in said bed-piece.

O is the feed-dog, which is sustained on or fastened to a feed-bar, 0. One end of the block 0 has a slot, 0, in which fits and revolves a cam, 12, on the main shaft B. The

other end of the feed bar has a slot, c,'inv

side of the bed-piece and crosses the main shaft B beneath the latter, being curved, as

-' shown, so as to pass under and then arise into the plane of said shaft. 7

On the operators side of the machine the lever Fis pivotal] y connected by an adjustable setscrew, G, with a segmentally-slotted arm,

H. Said arm springs from or is secured to'a collar, I,which encircles a cam, b,on the main shaft B, and from said collar there projects downwardly a rigid pin or stud, K, which enters a smooth socket or sleeve, L, on a rockshaft, L, fitted in a bearing, M, .on the bedpiece A.

WVhen the main shaft rotates, a longitudinally-reciprocating movement is imparted to the feed-bar by the leverFand the connections described, the rising and falling movements of the feed-bar, which has a four motion,

being derived from the cam I).

By adjusting the position of the pint-lescrew G in the slot h of the rock-arm H the length of the feed of the machine may be regulated, and as the adjusting-screw is on the operators side of the machine, such regulation may be very readily effected.

What I claim as my invention is as follows:

In a sewing-machine feed',the combination,

with the feed-dog C, of the feed-bar G, having slots 0 c,one at each end, andalateral pin, E, pin d, bed-piece A, having opening a,rlever F, rock-arm H, having slot h, adjusting pintle-screw G, collar I, stud K, rock-shaft L,

having sleeve L, and shaft B, having cams b b, said parts being constructed and arranged for operation substantially as shown and described. i

In testimony that I claim the foregoing I March, 1886.

JOHN WV. DEWEES.

Witnesses:

M. D. OoNNoLLY, R. DALE SPARHAWK.

have hereunto set my hand this 8th day of 

